Lubricator.



J. A. MARTIN, DECD. 0. E. MARTIN, ADMINISTRATOR.

LUBRIGATDR. APPLICATION FILED SEPT; 19, 1905.

Patented Nov. 16, 1909.

wmlli W/TNEJJfS J/y/ L UNITED STATES PATENT OFFICE.

JAMES A. MARTIN, or'ToLnno, 01110; CHARLES E. MARTIN ADMINISTRATOR F SAID JAMEs A. MARTIN, DECEASED.

LUBRI'oAToR.

Specification of Letters Patent. Patented Nov. 16, 1909.

Application filed September 19, 1905. Serial No. 279,113.

. marked thereon,'which form a part of this specification.

lily invention relates to that class of inbricators for steam engine cylinders in which the oilis forced from the lubricatorcup to the cylinder of .the engine by means of a plunger actuated by the var ing pressure of the steam in the steam-Cy inder.

The object of my invention is to rovide a cheap, simple-and durable device w ich shall dispense with a number of I -fore employed in devices oft is class, es-

arts heretoand stufling-boxes;

pecially outside packin I operated by hand,

which may, if desired,

thus dispensing with the ordinary 'hand- 'pum heretofore employed preliminary to starting the engine in which the leakage past the plunger shall be automatically' returned into the oil-cup, and in which stearn is excludedfrom the operating portions of 'bricant.

the lubricator by means ofaninterposed .water. cushion, thus preventing the undue heating of the lubricator-parts and thelu- I attain these objects b means of the devices and arrangement o parts hereinafter described and shown, and illustratedv in the accompanying drawing in which the single figure illustrates my lubricator in central vertical sectional elevation.

- the top and base maly In the drawing, 1 is a glass cylinder closed- .at top by-a flanged metaltop 2 and at bottom by a flanged metal base 3. The base is provided with an axial downwardly projecting tubular extension 4 and an internal upwardly projecting tubular extension 5.

The latter extension is threaded at its top and is connected with'a correspondingly threaded tube 6 which.projects through the top 2 and which is threaded at its 11 per end to receive a nut 7. By means of the nut 7 be drawn together upon the upper and wer margins of the glasslcylinder 1, upon thin gaskets, and thus tight joints are obtained. Resting upon the top 2 is a disk- 8, journa'led at its center upon a boss 9 surrounding the central opening through the top. The disk 8v is provided with a knob or handle 8 by means of which it may be turned upon its central bearing.

Through the disk and through the top are openings 8 which may be thrown into coincidence and through these openings oil is supplied to the reservoir 1. The disk 8 has also a curved slot through which extends the support upon which the hand-lever s7 is in crumed. 1 Other means for pivotall su pprting'the handle 27 will, however, e o v1ous. a j

. The downwardly. projecting. tubular extension-4 is threa ed at its lower end, as at 10, and is suitably connected with a supporting base. v

11 is a steam pipe-leading. from and connectin with the interior ofthe steam cylinder to e lubricated and'with the tubular extension 4. In this steam pipe is ahandvalve 12 between .the steam cylinder and the lubricator, also a drip-cock 13.

The tubular extensions of the base 3 are,

bored to two diameters, the diameter of the part 4 being larger than the diameter of the part next above the part 4. Within the tubes 4, 5', and 6 is a pistonmod 14 which passes through the nut 7 and extends above the-top. of the lubricator, as shown. Secured to the bottom of the rod 14 is a plun-' ger 15 having, preferably, reversed leather cups,and WhlCh reciprocates in the bore of the tubular part 4;. Immediately above the plunger 15 is a piston 16, formed preferably integral with therod '14. The piston 16 is of less area thanthe plunger 15 and fits operatively within the reduced bore of the tubular portion of the base. The'lower end of the piston 16 is arranged to move partly into the chamber of the plunger 15. Interposed-between the topof the piston 16 and the lower end of the tube6 is a spring 14; coiled around the rod 1 1 and adapted to hold the iston and plunger normally depressed; Leading into the chamber of the'tubular Y art 4: from the interior of the oil-reservoir is an oil-duct 17 in which is a ball-valve 18 which opensv toward the plunger 15 and which is held normally closed by coiled spring19.'

20 1s a'duct leading ,from the upper part movevdownwardly, closing valve 21, opening valve 17 and drawing the oil from the of the plunger chamber to the steam cylinder to be lubricated. (Not shown in the drawings.) ing outwardly and held normally closed by coiled spring22. Connected with the duct 20 is the usual sight-feed 23, regulating valve 2+1, and drip-cock 25.

Fulcrumed upon the top 3, asgat 26,is a hand-lever 27, the inner forked end of which engages a nut 28 on the top of the pistonrod 14. By means of this lever the plunger and piston, 15 and 16, may be operated by hand independently of steam power. .Such part of the lubricant as escapes around the piston 16' into the tube 6 finds its way back to the oil-reservoir through opening (Win the pipe 6.

That part of the steam-pipe 11 which is connected with the lubricator. is, as shown, disposed in a lower level than the remainder of the pipe. The lower part of this pipe, where it is connected with the lubricator, is filled with water, so'thatthe steam pressure from the steam-cylinder, with which pipe 11 is connected, is upon the water whichtransmits the-pressure to the plunger 15.- The interposed body oi water prevents steam from reaching the'lubricator andobviates the undue heating of the lubricant.

The operation of my device is as follows: The oil-reservoir being supplied with oil through the opening 8, and the valves 12' and '24 being opened, now, when steam is admitted to they steam cylinder, pressure is communicated to thevunder side of the plun ger 15, raising the piston 16, closing valve 17, and opening valve 21, causingqoil to. flow into the chamber of the steam cylinderthrough the duct 20. Vtlhen steam is exhausted from the steam cylinder pressure on the under side'of the plunger 15 is relieved and spring 14 causes piston 16 to oil-reservoir into the chamber of the plunger 15. Thus. it will be seen that the varying pressure of steam upon the liquid beneath .the plunger 15 produces a constant, slight vibration of the plunger 15 and piston 16, causing the two ball-valves to Work in opposite. directions and sending aconstant sup- In this duct is a ball-valve 21 open.-

claim and desire to secure. by LettersPat- 'ent 1s 1.111 a device of the described character,

an oil reservoir, having a downwardly projectingcentral'extension and an upwardly projecting central extension said two extensions having a common axial bore, the bore of the downward extension being larger than the bore of the upward extension, a

' tube connected with the upper extension and.

leading to the top of the reservoir, a piston rod in said tube, a piston in the bore of smaller diameter connected with said-piston rod, a plunger in the bore of larger diameter connected with said smaller plunger, there being a duct leading from the reservoir to the chamber ofsaid pistons, an inwardly opening valve in said duct, there being also a duct leading from said piston chamber, an outwardly opening valve in said. latterduct, and means for operatively connecting the latter duct with the steam SO space of an engine cylinder.

2. In a lubricator, an oil-reservoir in-? cluding a member forming a bottom closure for the reservoir, there being a downwardly projecting central extension upon said mem-.

her having an axial bore adapted for connection with the steam-space of an engine cylinder, there being also anupwardly projecting central extension upon said memher having an axial bore of less diameter than the bore first mentioned, a tube connected with the bore of theupper extension and extending upwardly through thevoilreservoir, a piston in each of said two bores, and a piston rod in said tube connected with said two pistons.

' In testimony whereof I affix my signaturein presence of two witnesses. JAMES A, MARTIN.

Witnesses:

CLEM'V- WAGNER, ADA LAW. 

